It takes 5 years for light to reach the earth from A Star. Express the distance of Star from the earth in (a) Light year (b) km.
What is the distance of the star (in km) from which a light takes 3 x 109 year to reach the earth? The speed of light, is C = 3 x 108 m/s.
Question 174
A particular star is at a distance of about 8.1×1013 km from the Earth. Assuring that light travels at 3×108 m per second, find how long does light takes from that star to reach the Earth?
A particular star is at a distance of about 8.1×1013 km from the earth.assuming that the light travels at 3×108 m/sec.find how long does light takes from that star to reach the earth.